Mahe a easy flow chart with the timing

67663.jpg

67664.jpg

analyse_media

Generating Image

A clean, easy-to-read medical flowchart titled "Generation & Conduction of Cardiac Impulse" showing the following steps with timing values in labeled boxes connected by arrows: 1. SA NODE (0.00 s) - "Origin of impulse" - large yellow/orange box at top Arrow down 2. INTERNODAL PATHWAYS (0.01 - 0.05 s) - "Spreads through atria" - blue box Note: "Atrial excitation takes 60-90 msec" Arrow down 3. AV NODE (0.03 - 0.12 s) - "Conduction slows: 0.05 m/sec" - red box Note: "AV Nodal Delay = 0.1 s" Arrow down 4. BUNDLE OF HIS / AV Bundle (0.12 s) - green box Arrow down splits into two: Left: LEFT BUNDLE BRANCH (0.16 s) Right: RIGHT BUNDLE BRANCH (0.16 s) Both arrows down join together: 5. PURKINJE FIBERS (0.19 s) - "Conduction velocity: 4 m/sec" - purple box Arrow down 6. VENTRICULAR MYOCARDIUM - "Endocardium to Epicardium" - teal box Sub-steps: Apex (0.20-0.21 s) → Posterobasal LV last (0.22 s) Bottom note: "Total ventricular excitation = 75 msec" Use a white background, colored boxes for each step, clear black arrows, and bold timing labels. Keep it simple and student-friendly.

Here's your flowchart!

Here's a quick summary of the key timings covered:

Structure	Timing
SA Node (origin)	0.00 s
Atrial excitation (full)	60-90 msec
AV Node entry	0.03 s
AV Node exit (Bundle of His)	0.12 s
AV Nodal Delay	~0.1 s
Bundle branches	0.16 s
Purkinje fibers (apex)	0.19 s
Posterobasal LV (last)	0.22 s
Total ventricular excitation	~75 msec

Key conduction velocities to remember:

AV Node: 0.05 m/sec (slowest - causes the AV nodal delay)
Purkinje fibers: 4 m/sec (fastest)
Ventricular muscle: 0.3-0.5 m/sec

I don't understand make it properly

Running Command

mkdir -p /home/daytona/workspace/cardiac-flowchart

Writing File

~/cardiac-flowchart/index.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Generation & Conduction of Cardiac Impulse</title>
<style>
  * { margin: 0; padding: 0; box-sizing: border-box; }
  body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f0f4f8;
    padding: 30px 20px;
    min-height: 100vh;
  }

  h1 {
    text-align: center;
    background: #1a1a2e;
    color: #fff;
    padding: 18px 30px;
    border-radius: 12px;
    font-size: 22px;
    letter-spacing: 1px;
    margin-bottom: 30px;
    text-transform: uppercase;
  }

  .flowchart {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  /* --- BOX --- */
  .box {
    width: 520px;
    border-radius: 14px;
    padding: 16px 22px;
    position: relative;
    box-shadow: 0 4px 14px rgba(0,0,0,0.13);
  }

  .box .step-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.75;
    margin-bottom: 4px;
  }

  .box .title {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 6px;
  }

  .box .detail {
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.92;
  }

  .box .timing-badge {
    display: inline-block;
    background: rgba(255,255,255,0.3);
    border: 2px solid rgba(255,255,255,0.6);
    border-radius: 20px;
    padding: 3px 14px;
    font-size: 13px;
    font-weight: 700;
    margin-top: 8px;
  }

  /* --- COLORS --- */
  .sa    { background: #e74c3c; color: #fff; }
  .atria { background: #e67e22; color: #fff; }
  .av    { background: #8e44ad; color: #fff; }
  .his   { background: #2980b9; color: #fff; }
  .purk  { background: #27ae60; color: #fff; }
  .ventm { background: #16a085; color: #fff; }
  .last  { background: #2c3e50; color: #fff; }

  /* --- ARROW --- */
  .arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
  }
  .arrow .line {
    width: 4px;
    height: 30px;
    background: #555;
  }
  .arrow .head {
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 14px solid #555;
  }
  .arrow .label {
    font-size: 12px;
    color: #444;
    font-weight: 600;
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 6px;
    padding: 2px 10px;
    margin-bottom: 4px;
    margin-top: -2px;
  }

  /* --- SPLIT for bundle branches --- */
  .split-row {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: center;
    gap: 20px;
    width: 560px;
  }

  .split-box {
    width: 240px;
    border-radius: 14px;
    padding: 14px 16px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.13);
    color: #fff;
  }
  .split-box .title { font-size: 16px; font-weight: 800; margin-bottom: 4px; }
  .split-box .detail { font-size: 13px; opacity: 0.9; }
  .split-box .timing-badge {
    display: inline-block;
    background: rgba(255,255,255,0.3);
    border: 2px solid rgba(255,255,255,0.6);
    border-radius: 20px;
    padding: 2px 12px;
    font-size: 12px;
    font-weight: 700;
    margin-top: 6px;
  }
  .lbb { background: #2471a3; }
  .rbb { background: #1a5276; }

  /* Split connector */
  .split-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 560px;
  }
  .split-top {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: center;
    width: 100%;
  }
  .split-line-v {
    width: 4px;
    background: #555;
  }
  .split-line-h {
    height: 4px;
    background: #555;
  }
  .split-branch {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  /* note box */
  .note {
    width: 520px;
    background: #fff3cd;
    border-left: 5px solid #f0a500;
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 13px;
    color: #5a3e00;
    margin-top: 6px;
    margin-bottom: 2px;
  }
  .note strong { font-size: 14px; }
</style>
</head>
<body>

<h1>⚡ Generation &amp; Conduction of Cardiac Impulse</h1>

<div class="flowchart">

  <!-- STEP 1: SA Node -->
  <div class="box sa">
    <div class="step-label">Step 1 — Origin</div>
    <div class="title">SA Node (Sinoatrial Node)</div>
    <div class="detail">Impulse is generated here spontaneously (pacemaker of the heart)</div>
    <div class="timing-badge">⏱ 0.00 s</div>
  </div>

  <div class="arrow">
    <div class="line"></div>
    <div class="label">Via internodal pathways</div>
    <div class="head"></div>
  </div>

  <!-- STEP 2: Atria -->
  <div class="box atria">
    <div class="step-label">Step 2 — Atrial Spread</div>
    <div class="title">Both Atria Depolarize</div>
    <div class="detail">Wave spreads through both atria via internodal pathways<br>Atria contract and pump blood into ventricles</div>
    <div class="timing-badge">⏱ 0.01 – 0.05 s &nbsp;|&nbsp; Full atrial excitation: 60–90 msec</div>
  </div>

  <div class="arrow">
    <div class="line"></div>
    <div class="label">Reaches AV Node</div>
    <div class="head"></div>
  </div>

  <!-- STEP 3: AV Node -->
  <div class="box av">
    <div class="step-label">Step 3 — Delay ⚠️</div>
    <div class="title">AV Node (Atrioventricular Node)</div>
    <div class="detail">
      Conduction SLOWS dramatically<br>
      Velocity: <strong>0.05 m/sec</strong> (slowest in heart)<br>
      This delay allows atria to finish emptying before ventricles contract
    </div>
    <div class="timing-badge">⏱ 0.03 s (entry) → 0.12 s (exit) &nbsp;|&nbsp; AV Nodal Delay = 0.1 s</div>
  </div>

  <div class="arrow">
    <div class="line"></div>
    <div class="label">Only pathway to ventricles</div>
    <div class="head"></div>
  </div>

  <!-- STEP 4: Bundle of His -->
  <div class="box his">
    <div class="step-label">Step 4 — Conduction Highway</div>
    <div class="title">Bundle of His (AV Bundle)</div>
    <div class="detail">Only electrical connection between atria and ventricles</div>
    <div class="timing-badge">⏱ 0.12 s</div>
  </div>

  <!-- Split arrow down into LBB and RBB -->
  <div style="display:flex; flex-direction:column; align-items:center; margin:0;">
    <!-- vertical line from His -->
    <div style="width:4px; height:20px; background:#555;"></div>
    <!-- horizontal bar -->
    <div style="display:flex; align-items:flex-start; width:340px; justify-content:center;">
      <!-- left arm -->
      <div style="display:flex; flex-direction:column; align-items:center; width:50%;">
        <div style="width:4px; height:20px; background:#555;"></div>
        <div style="width:0; height:0; border-left:10px solid transparent; border-right:10px solid transparent; border-top:14px solid #555;"></div>
      </div>
      <!-- horizontal line connecting them at top -->
      <div style="position:relative; top:0; width:100%; height:4px; background:#555; margin-top:0;"></div>
      <!-- right arm -->
      <div style="display:flex; flex-direction:column; align-items:center; width:50%;">
        <div style="width:4px; height:20px; background:#555;"></div>
        <div style="width:0; height:0; border-left:10px solid transparent; border-right:10px solid transparent; border-top:14px solid #555;"></div>
      </div>
    </div>
  </div>

  <!-- STEP 5: Bundle Branches side by side -->
  <div class="split-row">
    <div class="split-box lbb">
      <div class="title">Left Bundle Branch (LBB)</div>
      <div class="detail">Left side of interventricular septum depolarizes first</div>
      <div class="timing-badge">⏱ 0.16 s</div>
    </div>
    <div class="split-box rbb">
      <div class="title">Right Bundle Branch (RBB)</div>
      <div class="detail">Depolarization spreads to right side of septum</div>
      <div class="timing-badge">⏱ 0.16 s</div>
    </div>
  </div>

  <!-- Converge arrows back to center -->
  <div style="display:flex; align-items:flex-start; width:340px; justify-content:center;">
    <div style="display:flex; flex-direction:column; align-items:center; width:50%;">
      <div style="width:4px; height:20px; background:#555;"></div>
    </div>
    <div style="width:100%; height:4px; background:#555; margin-top:20px;"></div>
    <div style="display:flex; flex-direction:column; align-items:center; width:50%;">
      <div style="width:4px; height:20px; background:#555;"></div>
    </div>
  </div>
  <div style="width:4px; height:10px; background:#555;"></div>
  <div style="width:0; height:0; border-left:10px solid transparent; border-right:10px solid transparent; border-top:14px solid #555; margin-bottom:0;"></div>

  <!-- STEP 6: Purkinje Fibers -->
  <div class="box purk">
    <div class="step-label">Step 6 — Rapid Spread</div>
    <div class="title">Purkinje Fibers</div>
    <div class="detail">
      Spreads RAPIDLY to all parts of ventricular walls<br>
      Velocity: <strong>4 m/sec</strong> (fastest in heart)<br>
      Depolarization: endocardium → epicardium (inside → outside)
    </div>
    <div class="timing-badge">⏱ 0.19 s (apex)</div>
  </div>

  <div class="arrow">
    <div class="line"></div>
    <div class="label">Spreads apex → base</div>
    <div class="head"></div>
  </div>

  <!-- STEP 7: Ventricular Muscle -->
  <div class="box ventm">
    <div class="step-label">Step 7 — Ventricular Contraction</div>
    <div class="title">Ventricular Myocardium</div>
    <div class="detail">
      Both ventricles contract simultaneously and pump blood out<br>
      Velocity: <strong>0.3–0.5 m/sec</strong><br>
      Apex depolarizes first (0.20–0.21 s) → base last
    </div>
    <div class="timing-badge">⏱ 0.20 – 0.22 s &nbsp;|&nbsp; Total ventricular excitation = 75 msec</div>
  </div>

  <div class="arrow">
    <div class="line"></div>
    <div class="head"></div>
  </div>

  <!-- STEP 8: Last region -->
  <div class="box last">
    <div class="step-label">Step 8 — Last to Depolarize</div>
    <div class="title">Posterobasal Left Ventricle</div>
    <div class="detail">
      + Pulmonary conus &amp; uppermost septum<br>
      These are the LAST regions to depolarize
    </div>
    <div class="timing-badge">⏱ 0.22 s</div>
  </div>

  <!-- Summary Note -->
  <div style="height:20px;"></div>
  <div class="note">
    <strong>📊 Quick Summary of Timings</strong><br>
    SA Node → 0.00 s &nbsp;|&nbsp; AV Node entry → 0.03 s &nbsp;|&nbsp; AV Nodal Delay → 0.1 s &nbsp;|&nbsp;
    Bundle of His → 0.12 s &nbsp;|&nbsp; Bundle Branches → 0.16 s &nbsp;|&nbsp;
    Purkinje / Apex → 0.19 s &nbsp;|&nbsp; Last region (posterobasal LV) → 0.22 s<br><br>
    <strong>Conduction Velocities:</strong> AV Node = 0.05 m/sec (slowest) &nbsp;|&nbsp; Purkinje = 4 m/sec (fastest) &nbsp;|&nbsp; Ventricular muscle = 0.3–0.5 m/sec
  </div>

</div>

<div style="height:30px;"></div>
</body>
</html>

Running Command

cd /home/daytona/workspace/cardiac-flowchart && which wkhtmltoimage || which chromium || which google-chrome || which chromium-browser

Running Command

chromium --headless --no-sandbox --disable-gpu --screenshot=/home/daytona/workspace/cardiac-flowchart/flowchart.png --window-size=620,1600 "file:///home/daytona/workspace/cardiac-flowchart/index.html" 2>&1

Loading Image

Your proper flowchart is ready! Download both files below:

Open this in your browser for the best view:

index

HTML File · HTML

Or download the PNG image:

flowchart

Image · PNG

Here is what the flowchart covers, step by step:

Step	Structure	Timing	Key Point
1	SA Node	0.00 s	Origin - pacemaker
2	Both Atria	0.01-0.05 s	Full spread = 60-90 msec
3	AV Node	0.03-0.12 s	DELAY = 0.1 s (0.05 m/sec - slowest)
4	Bundle of His	0.12 s	Only bridge to ventricles
5	LBB + RBB	0.16 s	Left septum first
6	Purkinje Fibers	0.19 s	4 m/sec - fastest
7	Ventricular muscle	0.20-0.22 s	Total = 75 msec
8	Posterobasal LV	0.22 s	Last to depolarize

Open the HTML file in Chrome or any browser - it shows clean color-coded boxes with arrows, splitting for the two bundle branches, and a summary table at the bottom.

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